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5- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch
37587- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
2223How to calculate cable sizes in sq.mm. with using motor KW? Any formula there?
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18 306147I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.
1974what happen if i connect DYn11 and DYn1 vector group transformer in parrallel?other things are same like votage ration,x/r ratiob etc...
4 32505is there any difference between protection C.T and measuring C.T?if yes then what is the difference?
4 12353Post New Electrical Engineering Questions
what purose of the double circuit transmission line phase of the line phase changed for circuit-1 for Circuit-2 R-Y-B B-Y-R
what is the necessity of under ground cables ??
if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please
how much LT load can bear by the 100 KW HT connection.
What the difference between ac and dc inductor an capacitor
please give some hindalco placement papers for written exam
why the check zone and main zone are used for Busbar Protn. scheem?
Salient pole alternator is more stable, why?
If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.
Dear Sir I am living in Jaipur Rajasthan now I did complete my b tech degree in electrical engineering in 2012 Sir how I gate certificate of competency for electrical supervisor
Explain the term parallel path in dc machin ?
what is the difference between fault current ant short circuit current?
in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses? the second question is-generation is depends on LV winding? or LV winding design for generation voltage?
How the capacitance og capacitor volatage transformer is decided?
What will happen if i replace a inductive proximity switch with photo sensor in a machine?
